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| Home | NPP Products | LIDAR | Frequently Asked Questions |
| Site Map | Land / Ocean Merge | Field / Lab Data | Highlights / Results |
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Please note:
The Ocean Productivity Site has stopped updating its data.
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Online Data: Standard VGPM1080 by 2160 Monthly XYZ files from VIIRS R2022 Data
To get these data, please click on the file name(s) that you have selected and save locally on your computer. The individual xyz files are gzipped (use gunzip to uncompress) and the tar files contain gzipped xyz files.
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Data Selection
You can either download annual tar files with the data we have for each year,
or you can access the individual monthly files at the end of this page. Annual Tar Files
xyz file naming conventionvgpm.yyyyddd.all.xyz.gzvgpm = net primary production (units of mg C / m**2 / day) based on the standard vgpm algorithm yyyy = year ddd = day of year of the start of each monthly file all = all pixels output, including those with no data (nodata = -9999) xyz = text file, where x = longitude, y = latitude and z = npp value gz = compressed with gzip (uncompress with gunzip) note: The xyz files have a single header line, indicating the order of the variables and the value of nodata. npp is based on the standard vgpm, using modis chl, sst4, and par as input; clouds have been filled in the input data using our own gap-filling software. These xyz data have been extracted from 1080 x 2160 global monthly grids, and the locations given represent the center of each pixel. For citation, please reference the original vgpm paper by Behrenfeld and Falkowski, 1997a as well as the Ocean Productivity site for the data. Monthly Files |
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